scholarly journals Influence of Cu content on the phase composition and thermoelectric properties of deposited Cu-Se films

2022 ◽  
Vol 28 ◽  
pp. 101651
Author(s):  
Guipeng Li ◽  
Guihong Song ◽  
Nan Wang ◽  
Fang Hu ◽  
Yusheng Wu ◽  
...  
Keyword(s):  
Phase Composition ◽  
Thermoelectric Properties ◽  
Cu Content

Phase Composition and Thermoelectric Properties of Materials Based on Cu2 – xSe (0.03 ≤ x ≤ 0.23)

2021 ◽  
Vol 16 (3) ◽  
pp. 351-356
Author(s):  
A. A. Ivanov ◽  
R. Kh. Akchrin ◽  
D. I. Bogomolov ◽  
V. T. Bublik ◽  
M. V. Voronov ◽  
...  
Keyword(s):  
Phase Composition ◽  
Thermoelectric Properties ◽  
Properties Of Materials

scholarly journals The Effects of Excess Co on the Phase Composition and Thermoelectric Properties of Half-Heusler NbCoSb

Materials ◽  
2018 ◽  
Vol 11 (5) ◽  
pp. 773 ◽  
Author(s):  
Lihong Huang ◽  
Junchen Wang ◽  
Xi Chen ◽  
Ran He ◽  
Jing Shuai ◽  
...  
Keyword(s):  
Phase Composition ◽  
Thermoelectric Properties

scholarly journals Phase composition and thermoelectric properties of the nanocomposite alloys NaxCu2-x-yS

2020 ◽  
Vol 4 (1) ◽  
pp. 67-85
Author(s):  
M.M. Kubenova ◽  
M.Kh. Balapanov ◽  
K.A. Kuterbekov ◽  
R.Kh. Ishembetov ◽  
A.M. Kabyshev ◽  
...  
Keyword(s):  
Phase Composition ◽  
Thermoelectric Properties

Enhanced Thermoelectric Properties of Cu x Se (1.75≤ x ≤2.10) during Phase Transitions

2021 ◽  
Vol 38 (11) ◽  
pp. 117201
Author(s):  
Zhongmou Yue ◽  
Kunpeng Zhao ◽  
Hongyi Chen ◽  
Pengfei Qiu ◽  
Lidong Chen ◽  
...  
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Thermoelectric Properties ◽  
Phonon Scattering ◽  
Structural Evolution ◽  
Chemical Compositions ◽  
Cu Content ◽  
Thermoelectric Transport Properties ◽  
Evolution Phase ◽  
Experimental And Theoretical Studies

Coupling of a phase transition to electron and phonon transports provides extra degree of freedom to improve the thermoelectric performance, while the pertinent experimental and theoretical studies are still rare. Particularly, the impaction of chemical compositions and phase transition characters on the abnormal thermoelectric properties across phase transitions are largely unclear. Herein, by varying the Cu content x from 1.75 to 2.10, we systemically investigate the crystal structural evolution, phase transition features, and especially the thermoelectric properties during the phase transition for Cu x Se. It is found that the addition of over-stoichiometry Cu in Cu x Se could alter the phase transition characters and suppress the formation of Cu vacancies. The critical scatterings of phonons and electrons during phase transitions strongly enhance the Seebeck coefficient and diminish the thermal conductivity, leading to an ultrahigh dimensionless thermoelectric figure of merit of ∼1.38 at 397 K in Cu2.10Se. With the decreasing Cu content, the critical electron and phonon scattering behaviors are mitigated, and the corresponding thermoelectric performances are reduced. This work offers inspirations for understanding and tuning the thermoelectric transport properties during phase transitions.

Structure, Phase Composition, and Thermoelectric Properties of YbxCo4Sb12 and Their Dependence on Synthesis Method

2017 ◽  
Vol 1 (1) ◽  
pp. 113-122 ◽  
Author(s):  
Britta Ryll ◽  
Andreas Schmitz ◽  
Johannes de Boor ◽  
Alexandra Franz ◽  
Pamela S. Whitfield ◽  
...  
Keyword(s):  
Phase Composition ◽  
Thermoelectric Properties ◽  
Synthesis Method ◽  
Structure Phase

scholarly journals Thermoelectric Properties of Solid Solutions PbSnAgTe

2017 ◽  
Vol 18 (2) ◽  
pp. 211-214 ◽  
Author(s):  
M.O. Haluschak ◽  
I.V. Horichok ◽  
T.O. Semko ◽  
S.I. Mydryi ◽  
S. Optasyuk ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Phase Composition ◽  
Thermoelectric Properties ◽  
Solid Solutions ◽  
Figure Of Merit ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure

The phase composition and thermoelectric properties of solid solutions Pb16Sn2Ag2Te20 and Pb14Sn4Ag2Te20 are researched. Biphasic structure of the samples is installed, which providing to low values of thermal conductivity. Best samples have values of dimensionless thermoelectric figure of merit ZT ≈ 0,55.

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